CN104284359B - Trans-regional disaster tolerance system and control method under a kind of EPC networks - Google Patents
Trans-regional disaster tolerance system and control method under a kind of EPC networks Download PDFInfo
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- CN104284359B CN104284359B CN201410268168.0A CN201410268168A CN104284359B CN 104284359 B CN104284359 B CN 104284359B CN 201410268168 A CN201410268168 A CN 201410268168A CN 104284359 B CN104284359 B CN 104284359B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/04—Arrangements for maintaining operational condition
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Abstract
The present invention relates to trans-regional disaster tolerance systems under a kind of EPC networks, on prior art network framework basis, add the backup mobility management entity/gateway of distribution in different geographical locations, while realization monitors mobility management entity/gateway in real time, customer equipment context information is backed up by backup mobility management entity/gateway；It is corresponding to this, the invention further relates to the control methods of trans-regional disaster tolerance system under EPC networks, it realizes when mobility management entity/gateway breaks down, backup mobility management entity/gateway can be put into network and work in time, and the stability of whole network work has been effectively ensured.
Description
Technical field
The present invention relates to trans-regional disaster tolerance system and control methods under a kind of EPC networks.
Background technology
With the continuous development of wireless technology, society and business are also continuously increased the dependence of Information Mobile Service.Therefore, no matter
It is for user or operator, avoids service disconnection, keeps the continuity of service to be all vital.
Currently, causing system the main reason for wicked problems occur has the following aspects：（1）System resource failure,
Including hardware fault and software fault；（2）Failure caused by artificial origin；（3）Disaster caused by natural cause, such as：The perils of the sea, hurricane
Wind, earthquake.The generation of failure can bring serious economic loss, thereby it is ensured that mobile network can be the same just like fixed network can
It is a kind of inexorable trend by property.Although having much about wireless network disaster tolerance and the successional research of service, but without one
Kind can be directed to the Disaster Tolerant Scheme that EPC networks carry out.We have proposed the trans-regional disaster tolerance solution party in a kind of LTE/EPC networks
Method when especially MME or S-GW are damaged, monitors the failure and keeps service continuity, carry in time when network element damages
The high service quality of LTE/EPC networks.
Invention content
Technical problem to be solved by the invention is to provide a kind of mobility management entity/services in EPC networks
Gateway is monitored in real time, and can effectively ensure that trans-regional disaster tolerance system under the EPC networks of whole network steady operation.
Corresponding to this, technical problem to be solved by the invention is to provide a kind of mobile management in EPC networks
Entity/gateway is monitored in real time, and in such a way that backup switches, whole network steady operation is effectively ensured, improves EPC
The control method that trans-regional disaster tolerance system under EPC networks is designed based on the present invention of network service quality.
In order to solve the above-mentioned technical problem the present invention uses following technical scheme：The present invention devises under a kind of EPC networks
Trans-regional disaster tolerance system, including user equipment, network operations management maintenance module and mould is safeguarded with network operations management respectively
Packet data network gateway that block is connected, mobility management entity/gateway, base station, wherein mobility management entity/clothes
Business gateway is connected with packet data network gateway, base station respectively, user equipment access base station；Further include that backup mobile management is real
Body/gateway, mobility management entity/gateway and backup mobility management entity/gateway are distributed in different
On geographical location, wherein network operations management maintenance module is connected with backup mobility management entity/gateway, backup
Mobility management entity/gateway is connected with packet data network gateway, base station respectively, mobility management entity/service network
It closes and is connected into row data communication between backup mobility management entity/gateway.
As a preferred technical solution of the present invention：Mobility management entity/the gateway and backup mobility
By optical fiber or Metro/Carrier Ethernets high-speed transmission link into row data communication between management entity/gateway.
Trans-regional disaster tolerance system uses above technical scheme is compared with the prior art under a kind of EPC networks of the present invention,
It has the following technical effects：The present invention designs trans-regional disaster tolerance system under EPC networks, on prior art network framework basis
On, the backup mobility management entity/gateway of distribution in different geographical locations is added, is being realized to mobile management
While entity/gateway is monitored in real time, by backup mobility management entity/gateway to user equipment above and below
Literary information is backed up, and is realized when mobility management entity/gateway breaks down, can be in time by network switching to standby
Part mobility management entity/gateway work, ensure that the stability of whole network work significantly.
Corresponding to this, in order to solve the above-mentioned technical problem the present invention uses following technical scheme：The present invention devises one kind
The control method that trans-regional disaster tolerance system under EPC networks is designed based on the present invention, is included the following steps：
User equipment described in step 001. accesses the base station, described point of the network operations management maintenance module control
While group Data Network Gateway, mobility management entity/gateway, base station are worked, the network operations management is safeguarded
Module configures the mobility management entity/gateway and backup mobility management entity/gateway that are connected, controls
It makes the backup mobility management entity/gateway and coupled mobility management entity/gateway carries out in fact
When data communicate, back up in realtime to the customer equipment context information in mobility management entity/gateway；
Meanwhile the network operations management maintenance module carries out real-time Communication for Power with mobility management entity/gateway, it is real
When judge whether the mobility management entity/gateway breaks down, be then enter next step, otherwise repeat this step
001；
Step 002. network operations management maintenance module respectively to the failure mobility management entity/gateway phase
Packet data network gateway even, base station, backup mobility management entity/gateway send switching control order, the mobility
Management entity/gateway is stopped, and backup mobility management entity/gateway calls on the user equipment that it has backed up
Context information combination packet data network gateway, base station work.
As a preferred technical solution of the present invention：In the step 001, the network operations management maintenance module with
Mobility management entity/gateway carries out real-time Communication for Power, and network operations management maintenance module is by periodicity to mobility pipe
It manages entity/gateway and sends message, and obtain the response message fed back from periodicity to mobility management entity/gateway
Mode, whether the real-time judge mobility management entity/gateway break down.
As a preferred technical solution of the present invention：In the step 002, when the network operations management maintenance module
When judging that mobility management entity/gateway breaks down, network operations management maintenance module to the failure mobility pipe
Manage the connected packet data network gateway of entity/gateway, base station, backup mobility management entity/gateway transmission switching
Control command receives the packet data network gateway of switching control order, base station starts to buffer failure mobile management reality respectively
The user equipment uplink and downlink data of body/gateway；Then the grouping being connected with the failure mobility management entity/gateway
Data Network Gateway, base station discharge the connection with the failure mobility management entity/gateway, and real with backup mobile management
Body/gateway begins setting up connection, which is stopped, user equipment again with
Connection is established in base station；Finally, base station sends solicited message and establishes connection with backup mobility management entity/gateway.
As a preferred technical solution of the present invention：Further include operating as follows in the step 001, if the EPC nets
When increasing mobility management entity/gateway in network newly, trans-regional disaster tolerance system carries out as follows under the EPC networks
Control：
The network operations management maintenance module is that newly-increased mobility management entity/gateway is specified to be distributed in not with it
Backup mobility management entity/gateway on same geographical location；Then the network operations management maintenance module difference
It is configured with backup mobility management entity/gateway for mutual corresponding newly-increased mobility management entity/gateway
Update so that newly-increased mobility management entity/gateway is established with backup mobility management entity/gateway to be connected；It connects
It, network operations management maintenance module is to mutual corresponding newly-increased mobility management entity/gateway and backup mobility pipe
Reason entity/gateway carries out load update；Finally, network operations management maintenance module update increase newly mobility management entity/
Correspondence switching method between gateway and corresponding backup mobility management entity/gateway.
More than a kind of control method being designed trans-regional disaster tolerance system under EPC networks based on the present invention of the present invention is used
Technical solution compared with prior art, has the following technical effects：The present invention designs the control of trans-regional disaster tolerance system under EPC networks
Method processed, for the EPC networks system for adding the backup mobility management entity/gateway of distribution in different geographical locations
It is real to control backup mobile management while realization monitors mobility management entity/gateway in real time for framework of uniting
Body/gateway backs up customer equipment context information, realizes and breaks down in mobility management entity/gateway
When, backup mobility management entity/gateway can be put into network and work in time, and whole network has been effectively ensured
The stability of work.
Description of the drawings
Fig. 1 is trans-regional disaster tolerance system module diagram under the EPC networks that the present invention designs；
Fig. 2 is the flow diagram of trans-regional disaster tolerance system control method under present invention design EPC networks；
Fig. 3 is that system control method is illustrated when increasing mobility management entity/gateway newly in present invention design EPC networks
Figure；
Fig. 4 is that control switches schematic diagram in trans-regional disaster tolerance system control method under present invention design EPC networks；
Fig. 5 be under present invention design EPC networks in trans-regional disaster tolerance system control method with backup mobility management entity/
Gateway establishes carrying schematic diagram.
Specific implementation mode
Specific embodiments of the present invention will be described in further detail with reference to the accompanying drawings of the specification.
As shown in Figure 1, trans-regional disaster tolerance system under a kind of EPC networks that the present invention designs, including user equipment, network behaviour
Make management service module and the packet data network gateway being connected respectively with network operations management maintenance module, mobility pipe
Manage entity/gateway, base station, wherein mobility management entity/gateway respectively with packet data network gateway, base station phase
Connection, user equipment access base station；Further include backup mobility management entity/gateway, mobility management entity/service network
It closes and backup mobility management entity/gateway is distributed in different geographical locations, wherein network operations management safeguards mould
Block is connected with backup mobility management entity/gateway, backup mobility management entity/gateway respectively with packet count
It is connected according to net gateway, base station, between mobility management entity/gateway and backup mobility management entity/gateway
By optical fiber or Metro/Carrier Ethernets high-speed transmission link into row data communication.
The present invention designs trans-regional disaster tolerance system under EPC networks and adds distribution on prior art network framework basis
Backup mobility management entity/gateway in different geographical locations is being realized to mobility management entity/service network
While putting row monitoring in real time into, customer equipment context information is carried out by backup mobility management entity/gateway
Backup, realization, can be in time by network switchings to backup mobility pipe when mobility management entity/gateway breaks down
Entity/gateway work is managed, ensure that the stability of whole network work significantly.
It is corresponding to this, as shown in Fig. 2, the present invention has also been devised based on trans-regional disaster tolerance system under present invention design EPC networks
The control method of system, includes the following steps：
User equipment described in step 001. accesses the base station, described point of the network operations management maintenance module control
While group Data Network Gateway, mobility management entity/gateway, base station are worked, the network operations management is safeguarded
Module configures the mobility management entity/gateway and backup mobility management entity/gateway that are connected, controls
It makes the backup mobility management entity/gateway and coupled mobility management entity/gateway carries out in fact
When data communicate, back up in realtime to the customer equipment context information in mobility management entity/gateway；
Meanwhile the network operations management maintenance module carries out real-time Communication for Power, net with mobility management entity/gateway
Network operation management maintainance module sends message by periodicity to mobility management entity/gateway, and obtains by periodicity
The mode of the response message fed back to mobility management entity/gateway, the real-time judge mobility management entity/service network
Whether pass breaks down, and is then to enter next step, otherwise repeats this step 001；
At the same time, if as shown in figure 3, in the EPC networks increase newly mobility management entity/gateway when, it is described
Trans-regional disaster tolerance system is controlled as follows under EPC networks：
The network operations management maintenance module is that newly-increased mobility management entity/gateway is specified to be distributed in not with it
Backup mobility management entity/gateway on same geographical location；Then the network operations management maintenance module difference
It is configured with backup mobility management entity/gateway for mutual corresponding newly-increased mobility management entity/gateway
Update so that newly-increased mobility management entity/gateway is established with backup mobility management entity/gateway to be connected；It connects
It, network operations management maintenance module is to mutual corresponding newly-increased mobility management entity/gateway and backup mobility pipe
Reason entity/gateway carries out load update；Finally, network operations management maintenance module update increase newly mobility management entity/
Correspondence switching method between gateway and corresponding backup mobility management entity/gateway.
Step 002. network operations management maintenance module respectively to the failure mobility management entity/gateway phase
Packet data network gateway even, base station, backup mobility management entity/gateway send switching control order, the mobility
Management entity/gateway is stopped, and backup mobility management entity/gateway calls on the user equipment that it has backed up
Context information combination packet data network gateway, base station work.Detailed process is as follows：
When the network operations management maintenance module judges that mobility management entity/gateway breaks down, network
Operation management maintainance module is to the packet data network gateway, base station, standby being connected with the failure mobility management entity/gateway
Part mobility management entity/gateway sends switching control order, receives packet data network gateway, the base of switching control order
It stands the uplink and downlink data of the user equipment for starting to buffer the failure mobility management entity/gateway respectively；Then with the event
The connected packet data network gateway of barrier mobility management entity/gateway, base station release and the failure mobility management entity/
The connection of gateway, and begin setting up and connect with backup mobility management entity/gateway, the failure mobile management is real
Body/gateway is stopped, and user equipment is established with base station and connected again；Finally, base station sends solicited message and is moved with backup
Mobility management entity/gateway establishes connection.
The present invention designs the control method of trans-regional disaster tolerance system under EPC networks, and different geography is distributed in for adding
The EPC network system architectures of backup mobility management entity/gateway on position, realize to mobility management entity/
While gateway is monitored in real time, control backup mobility management entity/gateway believes customer equipment context
Breath is backed up, and is realized when mobility management entity/gateway breaks down, backup mobility management entity/service network
Pass can be put into network in time to work, and the stability of whole network work has been effectively ensured.
Trans-regional disaster tolerance system and control method are in actual application under present invention design EPC networks, with reference to this
The invention design technology project framework EPC network architectures, wherein adding the backup mobility pipe of distribution in different geographical locations
Manage entity/gateway MME/S-GW, mobility management entity/gateway MME/S-GW and backup mobility management entity/
Gateway MME/S-GW realizes remote data communication, then as shown in Fig. 2, being held for trans-regional disaster tolerance system under EPC networks
Row method control as follows：
User equipment described in step 001. accesses the base station, described in the network operations management maintenance module OAM controls
While packet data network gateway P-GW, mobility management entity/gateway MME/S-GW, base station eNodeB are worked,
The network operations management maintenance module OAM moves the mobility management entity/gateway MME/S-GW being connected and backup
Mobility management entity/gateway MME/S-GW is configured, and the backup mobility management entity/gateway MME/ is controlled
S-GW and coupled mobility management entity/gateway MME/S-GW carry out real-time data communication, to mobility pipe
Reason entity/gateway MME/S-GW in user equipment (UE) contextual information back up in realtime, as mobility management entity/
Base station eNodeB that gateway MME/S-GW is supported, tracing area（TA）The information such as list, in present invention design, Ke Yishe
One backup mobility management entity/gateway MME/S-GW of meter corresponds to multiple mobility management entity/gateway MME/
S-GW realizes the remote data communication with multiple mobility management entity/gateway MME/S-GW, to multiple mobile management
User equipment (UE) contextual information in entity/gateway MME/S-GW is backed up in realtime；
Meanwhile the network operations management maintenance module OAM and mobility management entity/gateway MME/S-GW is carried out
Real-time Communication for Power, network operations management maintenance module OAM are sent out by periodicity to mobility management entity/gateway MME/S-GW
Message is sent, and is obtained from periodicity to the mode of mobility management entity/gateway MME/S-GW response messages fed back, it is real
When judge whether the mobility management entity/gateway MME/S-GW breaks down, be then enter next step, otherwise repeat
This step 001；
At the same time, if as shown in figure 3, increasing mobility management entity/gateway MME/S-GW in the EPC networks newly
When, trans-regional disaster tolerance system is controlled as follows under the EPC networks：
The network operations management maintenance module OAM is that newly-increased mobility management entity/gateway MME/S-GW is specified
It is distributed the mobility management entity of backup in different geographical locations/gateway MME/S-GW with it；Then the network
Operation management maintainance module OAM is respectively mutual corresponding newly-increased mobility management entity/gateway MME/S-GW and backup
Mobility management entity/gateway MME/S-GW carries out configuration update so that newly-increased mobility management entity/gateway
MME/S-GW is established with backup mobility management entity/gateway MME/S-GW and is connected；Then, network operations management safeguards mould
Block OAM is to mutual corresponding newly-increased mobility management entity/gateway MME/S-GW and backup mobility management entity/service
Gateway MME/S-GW carries out load update；Finally, network operations management maintenance module OAM update increase newly mobility management entity/
Correspondence switching method between gateway MME/S-GW and corresponding backup mobility management entity/gateway MME/S-GW.
Step 002. network operations management maintenance module OAM respectively to the failure mobility management entity/gateway
Connected MME/S-GW packet data network gateway P-GW, base station eNodeB, backup mobility management entity/gateway MME/S-
GW sends switching control order, and the mobility management entity/gateway MME/S-GW is stopped, and backup mobile management is real
Body/gateway MME/S-GW call its user equipment (UE) contextual information combination packet data network gateway P-GW backed up,
Base station eNodeB works, wherein when network operations management maintenance module OAM sends switching control order to base station NodeB,
In a general catenet, a mobility management entity/gateway MME/S-GW will support hundreds of base station eNodeBs,
It is this to concentrate the process that switching control order is sent to a large amount of base station eNodeBs, it may occur that link time delay, so as to cause property
It can decline, in order to improve performance, present invention design is directed to this kind of situation, is cut to the transmission of multiple base station eNodeBs using mixed method
Control command is changed, so that base station eNodeB is passed through X2 interface and sends switching control order to neighbouring base station eNodeB.
Detailed process is as follows：
As shown in figure 4, when the network operations management maintenance module OAM judges mobility management entity/gateway
MME/S-GW break down when, network operations management maintenance module OAM to the failure mobility management entity/gateway
Connected MME/S-GW packet data network gateway P-GW, base station eNodeB, backup mobility management entity/gateway MME/S-
GW sends switching control order, receives the packet data network gateway P-GW of switching control order, base station eNodeB starts to delay respectively
Rush the user equipment (UE) contextual information of the failure mobility management entity/gateway MME/S-GW；Then it is moved with the failure
Packet data network gateway P-GW, base station eNodeB release and failure connected mobility management entity/gateway MME/S-GW
The connection of mobility management entity/gateway MME/S-GW, and with backup mobility management entity/gateway MME/S-GW
Begin setting up connection, which is stopped, user equipment (UE) again with base
The eNodeB that stands establishes connection；Finally, base station eNodeB sends solicited message and backup mobility management entity/gateway MME/
S-GW establishes connection.
In order to realize that efficient failover policies, network operations management maintenance module OAM need to occur in tracking network
All changes, and update relevant node accordingly, a variety of variations can occur in such as network, such as load, configuration and
Strategy etc..
As shown in figure 5, during establishing carrying with backup mobility management entity/gateway MME/S-GW, backup
Mobility management entity MME receives the connection request message from user equipment (UE), and verifies the user equipment based on IMSI value
UE contextual informations establish the communication between user equipment (UE) and backup mobility management entity MME；Due to EPS carrying informations
It is present in backup mobility management entity MME, backup mobility management entity MME establishes request message hair by sending carrying
It send to backup services gateway S-GW, including user equipment (UE) carrying list, base station eNodeB address and base station eNodeB
TEIDs (is carried through TEID to identify)；User equipment (UE) updates corresponding EPS carryings table to backup services gateway S-GW thus
, and this message is forwarded to associated packet data net gateway P-GW, the address including gateway S-GW and service network
Close the TEID of S-GW.After having updated EPS bearer context tables for user equipment (UE), packet data network gateway P-GW is to backup
Gateway S-GW, which sends to ring to carry, establishes response message, wherein comprising user plane and control plane packet data network gateway P-GW
Location and packet data network gateway P-GW TEID.Pass through bearer reconstruction response message, the S-GW forwarding services of backup services gateway
The gateway S-GW and addresses packet data network gateway P-GW, gateway S-GW and packet data network gateway P-GW TEID to backup
Mobility management entity MME successfully realizes the reconstruction of carrying；Message, mobility management entity MME are completed by carrying to establish
Completion information is established into this carrying and is forwarded to base station eNodeB；If bearer reconstruction success, backup mobility management entity
Start the contextual information of forwarding user equipment (UE) between MME and backup services gateway S-GW；If bearer reconstruction is unsuccessful, it
Failed message is established with regard to sending carrying.Then, base station eNodeB carries activation recovering message come notifying user equipment by transmission
UE starts to shift application program, and provide that backup mobility management entity/gateway MME/S-GW received in this message holds
List table.At the same time, the upstream data of buffering is sent to gateway S-GW, packet data network gateway P- by base station eNodeB
The downlink data of buffering is sent to gateway S-GW by GW.
Embodiments of the present invention are explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned implementations
Mode within the knowledge of a person skilled in the art can also be without departing from the purpose of the present invention
It makes a variety of changes.
Claims (1)
1. the control method of trans-regional disaster tolerance system under a kind of EPC networks, which is characterized in that include the following steps：
Step 001. user equipment access base station, network operations management maintenance module control packet Data Network Gateway, mobility pipe
While reason entity/gateway, base station are worked, network operations management maintenance module is real to the mobile management being connected
Body/gateway and backup mobility management entity/gateway are configured, control backup mobility management entity/service
Gateway and coupled mobility management entity/gateway carry out real-time data communication, to mobility management entity/clothes
Customer equipment context information in business gateway is backed up in realtime；Meanwhile network operations management maintenance module and mobility pipe
It manages entity/gateway and carries out real-time Communication for Power, whether mobility management entity/the gateway event occurs by real-time judge
Barrier is then to enter next step, otherwise repeats this step 001, if increasing mobility management entity/gateway in EPC networks newly
When, trans-regional disaster tolerance system is controlled as follows under EPC networks：Network operations management maintenance module is newly-increased movement
Property management entity/gateway is specified is distributed the mobility management entity of backup in different geographical locations/service network with it
It closes；Then network operations management maintenance module is respectively mutual corresponding newly-increased mobility management entity/gateway and backup
Mobility management entity/gateway carries out configuration update so that newly-increased mobility management entity/gateway is moved with backup
Property management entity/gateway establish connection；Then, network operations management maintenance module is to mutual corresponding newly-increased mobility pipe
Reason entity/gateway and backup mobility management entity/gateway carry out load update；Finally, network operations management is tieed up
Module update is protected to increase newly between mobility management entity/gateway and corresponding backup mobility management entity/gateway
Corresponding switching method；
Step 002. network operations management maintenance module is respectively to point being connected with the failure mobility management entity/gateway
Group Data Network Gateway, base station, backup mobility management entity/gateway send switching control order, and the mobile management is real
Body/gateway is stopped, and backup mobility management entity/gateway calls the customer equipment context letter that it has been backed up
Breath works in conjunction with packet data network gateway, base station；
Trans-regional disaster tolerance system includes user equipment, network operations management maintenance module and is grasped respectively with network under EPC networks
Make the packet data network gateway, mobility management entity/gateway, base station that management service module is connected, wherein mobility
Management entity/gateway is connected with packet data network gateway, base station respectively, user equipment access base station；It is characterized in that：
Further include backup mobility management entity/gateway, mobility management entity/gateway and backup mobile management are real
Body/gateway distribution is in different geographical locations, wherein network operations management maintenance module is real with backup mobile management
Body/gateway is connected, and backup mobility management entity/gateway is connected with packet data network gateway, base station respectively,
It is connected into row data communication between mobility management entity/gateway and backup mobility management entity/gateway；
Between mobility management entity/gateway and backup mobility management entity/gateway by optical fiber or
Metro/Carrier Ethernets high-speed transmission link is into row data communication；
In step 001, network operations management maintenance module carries out real-time Communication for Power, network with mobility management entity/gateway
Operation management maintainance module sends message by periodicity to mobility management entity/gateway, and obtain from periodicity to
The mode of the response message of mobility management entity/gateway feedback, the real-time judge mobility management entity/gateway
Whether break down；
In step 002, when network operations management maintenance module judges that mobility management entity/gateway breaks down, net
Network operation management maintainance module to be connected with the failure mobility management entity/gateway packet data network gateway, base station,
Backup mobility management entity/gateway sends switching control order, receive switching control order packet data network gateway,
Base station starts to buffer the user equipment uplink and downlink data of the failure mobility management entity/gateway respectively；Then with the event
The connected packet data network gateway of barrier mobility management entity/gateway, base station release and the failure mobility management entity/
The connection of gateway, and begin setting up and connect with backup mobility management entity/gateway, the failure mobile management is real
Body/gateway is stopped, and user equipment is established with base station and connected again；Finally, base station sends solicited message and is moved with backup
Mobility management entity/gateway establishes connection；
During carrying being established with backup mobility management entity/gateway MME/S-GW, backup mobility management entity
MME receives the connection request message from user equipment (UE), and verifies the user equipment (UE) contextual information based on IMSI value, builds
Vertical communication between user equipment (UE) and backup mobility management entity MME；Since EPS carrying informations are present in backup mobility
In management entity MME, backup mobility management entity MME establishes request message by transmission carrying and is sent to backup services gateway
S-GW is carried through TEID including user equipment (UE) carrying list, base station eNodeB address and base station eNodeB TEIDs
To identify；User equipment (UE) updates corresponding EPS carryings list item to backup services gateway S-GW thus, and this message is forwarded to phase
Packet data network gateway P-GW, the TEID of address and gateway S-GW including gateway S-GW are closed, for user
After equipment UE has updated EPS bearer context tables, packet data network gateway P-GW sends sound to backup services gateway S-GW and holds
Load establishes response message, wherein including user plane and the control plane addresses packet data network gateway P-GW and packet data network gateway
P-GW TEID, by bearer reconstruction response message, backup services gateway S-GW forwarding gateway S-GW and Packet Data Network's net
The addresses P-GW, gateway S-GW and packet data network gateway P-GW TEID are closed to backup mobility management entity MME, success
Realize the reconstruction of carrying in ground；Message is completed by carrying to establish, this carrying foundation is completed message and believed by mobility management entity MME
Breath is forwarded to base station eNodeB；If bearer reconstruction success, backup mobility management entity MME and backup services gateway S-GW it
Between start forward user equipment (UE) contextual information；If bearer reconstruction is unsuccessful, it just sends carrying and establishes failed message,
Then, base station eNodeB starts to shift application program come notifying user equipment UE by transmission carrying activation recovering message, this disappears
Backup mobility management entity/gateway MME/S-GW carrying lists received, at the same time, base station are provided in breath
The upstream data of buffering is sent to gateway S-GW by eNodeB, and packet data network gateway P-GW sends out the downlink data of buffering
Give gateway S-GW.
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|---|---|---|---|---|
| WO2018090386A1 (en) * | 2016-11-21 | 2018-05-24 | 华为技术有限公司 | Method, device and system for processing abnormities of nf modules |
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